If it was simply based off of uni and not location, I'd have picked applying to Warwick over QMUL. But the negligble difference between the two made London the pick.
Before people go off on a tangent about QMUL being overrated...Before applying a family friend who graduated from Trinity Hall-Cambridge advised on some unis before I sent off my application. He and other partners at several magic circle firms gave me critiques of the reps at each uni. All came to the consensus that QMUL is one of the most solid picks for any type of arbitration/litigation. These were the words from a senior lawyer at Clifford Chance and a partner at Baker.